1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc -mtriple=x86_64-unknown-linux-gnu -show-mc-encoding < %s | FileCheck %s
4 @a = external dso_local global { { i64 } }
6 define i32 @atomic_global() nounwind {
7 ; CHECK-LABEL: atomic_global:
8 ; CHECK: # %bb.0: # %entry
9 ; CHECK-NEXT: xorl %eax, %eax # encoding: [0x31,0xc0]
10 ; CHECK-NEXT: lock btsq %rax, a(%rip) # encoding: [0xf0,0x48,0x0f,0xab,0x05,A,A,A,A]
11 ; CHECK-NEXT: # fixup A - offset: 5, value: a-4, kind: reloc_riprel_4byte
12 ; CHECK-NEXT: xorl %eax, %eax # encoding: [0x31,0xc0]
13 ; CHECK-NEXT: retq # encoding: [0xc3]
16 %0 = atomicrmw or ptr @a, i64 %shl.i monotonic, align 8
17 %and.i = and i64 %shl.i, %0